A sealing ring and a groove structure

Abstract

The utility model belongs to the technical field of sealing ring, especially is involved in a kind of sealing ring and groove structure. Solve the sealing ring and be easy to come off from groove, thereby design a kind of new sealing ring and the sealing groove of the cylinder body that cooperates and uses. Sealing ring includes the sealing ring body of section " wedge shape ", sealing ring body includes upper body portion, middle body portion, lower body portion integrated molding;Upper body portion top surface is cambered surface;Middle body portion is symmetrically provided with sealing groove;Lower body portion bottom is plane, the side surface I of lower body portion, side surface II respectively with the inclination angle of adjacent one side cambered surface end identical. Groove structure includes cylinder body and the cylinder cover installed in cylinder body top, cylinder body top is provided with cylinder body sealing groove, and sealing ring is installed in cylinder body sealing groove;Cylinder body sealing groove is equipped with the fixing mechanism that cooperates with the sealing groove of sealing ring. Impact force and adhesive force of cylinder cover opening moment are fundamentally offset, and the risk of sealing ring coming off, displacement is completely avoided.

Description

Technical Field

[0001] This utility model belongs to the field of sealing ring technology, and in particular relates to a sealing ring and groove structure. Background Technology

[0002] In fields such as deep-sea exploration and underwater operations, submersibles are critical equipment, and their sealing performance directly affects the safety and reliability of equipment operation. The submersible's shell and cover, as the core load-bearing structure, must achieve strict sealing under both dynamic and static conditions through sealing rings to isolate external high-pressure water, silt, and corrosive media, ensuring the normal operation of internal precision instruments, circuit systems, and other equipment.

[0003] Currently, the commonly used sealing solution in the industry is to pre-cut annular groove 101 at the end of the cylinder and directly embed the elastic sealing ring 102 into the annular groove (this application). Figure 1 (See the schematic diagram of the existing sealing ring installation). The rigid connection between the cylinder cover 103 and the cylinder body 104 creates axial compression on the sealing ring 102, causing it to elastically deform and tightly adhere to the sealing surfaces of the cylinder body and the cylinder cover, thus achieving a sealing effect (this application). Figure 2 (Schematic diagram of existing sealing ring under pressure).

[0004] However, the actual operating environment of submersibles is extremely complex, and the opening and closing of their cylinders and covers faces multiple severe challenges. On the one hand, when the submersible is operating underwater, a pressure difference often forms between the inside of the cylinder and the external water due to equipment operation or environmental temperature differences. When the cover is opened, this pressure difference is rapidly released, generating a strong impact airflow or water flow, which exerts an outward thrust on the sealing ring. On the other hand, the sealing ring is in close contact with the sealing surface of the cover under long-term pressure, and the adhesive properties of the rubber material itself will create a certain degree of adhesion between it and the cover. When the combined force of these two forces exceeds the friction between the sealing ring and the groove or the constraint capacity of the groove on the sealing ring, the sealing ring is very likely to detach from the groove, shift, or even fall off.

[0005] The detachment of the sealing ring can lead to serious consequences: First, if the sealing ring is not accurately reset when the cylinder cover is closed again, it will cause a seal failure, allowing external water and impurities to enter the cylinder, damaging precision equipment, causing short circuits, and resulting in fatal malfunctions for the submersible. Second, the detached sealing ring may get stuck in the gap between the cylinder and the cylinder cover, preventing the cylinder cover from closing properly, forcing an interruption of operations, and increasing maintenance costs and operational risks. Third, for submersibles that require frequent opening and closing of the cylinder cover for equipment maintenance and data reading, the repeated detachment of the sealing ring will significantly reduce operational efficiency, shorten the service life of the sealing ring, and pose a great threat to the long-term stable operation of the submersible.

[0006] Therefore, in order to address the problem of the sealing rings easily coming off in the existing sealing structure of the submersible body and cover, it is urgent to propose a new sealing solution to improve sealing reliability and eliminate safety hazards. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a sealing ring and groove structure, which solves the problem of the sealing ring easily coming out of the groove, thereby designing a new sealing ring and a cylinder sealing groove for use with it.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A sealing ring includes a sealing ring body with a wedge-shaped cross-section. The sealing ring body includes an upper body portion, a middle body portion, and a lower body portion integrally formed. The top surface of the upper body portion is an arc-shaped surface. The middle body portion has symmetrically formed sealing grooves. The bottom surface of the lower body portion is a plane. The side surface I and side surface II of the lower body portion are at the same inclination angle as the end of the adjacent arc-shaped surface.

[0009] Furthermore, a polytetrafluoroethylene film layer is provided on the arc-shaped surface.

[0010] Furthermore, the opening of the sealing groove is inclined from point A to point B, and the inclination angle between point A and point B is consistent with the inclination angle of side I and side II.

[0011] A groove structure includes a cylindrical body and a cap installed on the top of the cylindrical body. A cylindrical body sealing groove is formed on the top of the cylindrical body, and a sealing ring is installed in the cylindrical body sealing groove. A fixing mechanism that cooperates with the sealing groove of the sealing ring is provided in the cylindrical body sealing groove.

[0012] Furthermore, the fixing mechanism includes a pressure plate I fixed to one side of the sealing groove of the cylinder; the fixing mechanism also includes a pressure plate II that can be movably detached from the other side of the sealing groove of the cylinder.

[0013] Furthermore, the pressure plate I includes a boss I, which engages and is fixed with a sealing groove on the same side; The pressure plate II includes a boss II, which engages and is fixed with a sealing groove on the same side.

[0014] Furthermore, a cavity for accommodating the lower body is formed below the boss I and boss II.

[0015] Furthermore, the pressure plate II is fixed to the sealing groove of the cylinder by screws.

[0016] Furthermore, the pressure plate I, pressure plate II, and sealing ring are fixed together in the sealing groove.

[0017] Compared with existing technologies, the beneficial effects of this utility model are as follows: By symmetrically opening sealing grooves on the sealing ring and cooperating with pressure plates I and II within the cylinder sealing groove to form a double-locking fixation, a multi-dimensional constraint mechanism is constructed. Specifically, the pre-locking of the boss I of pressure plate I with the sealing groove on one side of the sealing ring provides an initial positioning reference for the sealing ring; the precise alignment of the boss II of pressure plate II with the sealing groove on the other side of the sealing ring, combined with the rigid fixation of screws, firmly clamps the sealing ring between the two pressure plates and forms a tight fit with the cylinder sealing groove. This fundamentally offsets the impact and adhesion forces at the moment the cylinder cover is opened. The impact force is dispersed and absorbed by the rigid support of the pressure plates, and the adhesion force cannot act because there is no direct force connection between the sealing ring and the cylinder cover, completely avoiding the risk of the sealing ring coming off or shifting, and providing stable safety assurance for the equipment inside the cylinder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation of an existing sealing ring in the background art of this utility model; Figure 2 This is a schematic diagram of the sealing ring under pressure in the background art of this utility model; Figure 3 This is a schematic diagram of the sealing ring structure of this utility model; Figure 4 This is an exploded view of the trench structure of this utility model; Figure 5 This utility model Figure 4 Schematic diagram of the combined structure; Figure 6 This is a schematic diagram of the installation of the sealing ring and groove structure of this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort prior to the description are within the scope of protection of this utility model.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] like Figure 3-6 As shown, a sealing ring includes a sealing ring body 1 with a wedge-shaped cross-section. The sealing ring body 1 is integrally formed with an upper body portion 11, a middle body portion 12, and a lower body portion 13. The top surface of the upper body portion 11 is an arc-shaped surface 14, which bears the surface that is squeezed when the cylinder cover 3 is closed, and can contact and cooperate with the bottom surface of the cylinder cover 3 to achieve a seal. At the same time, a polytetrafluoroethylene film layer 19 can be laminated on the arc-shaped surface 14 to prevent the sealing ring from sticking to the cylinder cover and ensure that the sealing ring will not be taken out when the cylinder cover is opened; the middle body portion 12 is a wedge-shaped cross-section, and the lower body portion 13 is a wedge-shaped cross-section. The upper body portion 11 has an arc-shaped surface 14, which bears the surface that is squeezed when the cylinder cover 3 is closed, and can contact and cooperate with the bottom surface of the cylinder cover 3 to achieve a seal. At the same time, a polytetrafluoroethylene film layer 19 can be laminated on the arc-shaped surface 14 to prevent the sealing ring from sticking to the cylinder cover and to ensure that the sealing ring will not be taken out when the cylinder cover is opened; the middle body portion 12 is a wedge-shaped cross-section, and the lower body portion 13 is a wedge-shaped cross-section. The upper body portion 11 has an arc-shaped surface 14, which bears the surface that is squeezed when the cylinder cover 3 is closed ... The main body 12 is symmetrically provided with sealing grooves 15. The sealing grooves 15 engage with the pressure plates I5 and II6 to fix the sealing ring in the sealing groove 4 of the cylinder to prevent the sealing ring from falling out. The bottom surface of the lower main body 13 is a plane 16. The side I17 and side II18 of the lower main body 13 are at the same inclination angle as the end of the adjacent arc surface 14. The side I17 and side II18 are in contact with the concave surface below the pressure plates II6 and I5, respectively. The concave surface is located below the bosses II61 and I51.

[0025] Furthermore, the opening of the sealing groove 15 is inclined from point A 151 to point B 152, and the inclination angle between point A 151 and point B 152 is consistent with the inclination angle of side I 17 and side II 18; after the sealing ring is installed in the cylinder 2, refer to Figure 3 , 4 Point B152 on the left coincides with point C62, and point B152 on the right coincides with point D52.

[0026] A groove structure includes a cylindrical body 2 and a cylindrical cover 3 installed on the top of the cylindrical body 2. A cylindrical body sealing groove 4 is provided on the top of the cylindrical body 2, and the sealing ring of this application is installed in the cylindrical body sealing groove 4. A fixing mechanism is provided in the cylindrical body sealing groove 4 to cooperate with the sealing groove 15 of the sealing ring. The sealing ring is fixed in the cylindrical body sealing groove 4 by the fixing mechanism to prevent the sealing ring from falling out.

[0027] Furthermore, the fixing mechanism includes a pressure plate I5 fixed to one side of the sealing groove 4 within the cylinder body; the fixing mechanism also includes a pressure plate II6 movably detachable from the other side of the sealing groove 4 within the cylinder body. The design of the fixing mechanism adopts a modular pressure plate design. The fixed installation of pressure plate I and the detachable structure of pressure plate II balance sealing reliability and operational convenience. The detachable pressure plate II design facilitates regular inspection and replacement of the sealing ring, avoiding the sealing failure problem caused by aging or deformation of the sealing ring in traditional structures. This significantly extends the maintenance cycle and service life of the sealing system, meeting the sealing requirements of the submersible for long-term operation in complex underwater environments.

[0028] Furthermore, pressure plate I5 includes a boss I51, which engages and is fixed with the sealing groove 15 on the same side; pressure plate II6 includes a boss II61, which engages and is fixed with the sealing groove 15 on the same side; this application makes minor modifications to the existing cylinder and cylinder cover, can adapt to different sizes of sealing rings, and can achieve compatibility by adjusting the dimensions of the pressure plate and the boss, which has strong versatility and engineering application value, and is easy to promote and apply in various underwater vehicle sealing systems.

[0029] Furthermore, a chamber 7 is formed below boss I 51 and boss II 61 to accommodate the lower body 13; this application not only solves the problem of disengagement during dynamic opening and closing, but also improves the reliability of long-term use through an optimized sealing structure. The sealing ring forms multiple sealing contact interfaces through the engagement of the groove and the boss, and with the continuous pressure of the pressure plate, it ensures that the sealing ring always maintains uniform compression deformation, effectively isolating the intrusion of external high-pressure water, mud and sand and corrosive media.

[0030] Furthermore, the pressure plate II 6 is fixed to the sealing groove 4 of the cylinder by screws; during installation or maintenance, the sealing ring can be removed and put in place simply by removing the pressure plate II with screws, without the need for complex processing or modification of the cylinder sealing groove, thus simplifying the assembly process.

[0031] Furthermore, pressure plate I5, pressure plate II6, and sealing ring are fixed together in the sealing groove 15.

[0032] When using: First, hold the sealing ring and align the sealing groove 15 on one side (the inner circumference of the sealing ring) with the boss I51 of the pressure plate I5 inside the cylinder sealing groove 4. Slowly push the sealing ring so that the boss I51 is completely inserted into the sealing groove 15. At this time, the sealing ring initially fits the bottom of the cylinder sealing groove 4 under the positioning action of the boss I51, ensuring that the sealing ring is in a horizontal state without any tilting or offset.

[0033] The second step is to gently press the other side of the sealing ring (outer circumference of the sealing ring) to leave space for the installation of the pressure plate II6 between it and the inner wall of the other side of the cylinder sealing groove 4, in preparation for the subsequent engagement of the boss II6.

[0034] The third step is to pick up the pressure plate II6, align its boss II61 with the sealing groove 15 on the other side of the sealing ring, and slowly push it in along the axial direction of the cylinder sealing groove 4 until the boss II61 is completely embedded in the sealing groove 15. At this time, the pressure plate II6 should fit against the side of the cylinder sealing groove 4, and the sealing ring should be tightly clamped from both sides by the pressure plate I5 and the pressure plate II6.

[0035] Fourth step: Use a wrench to pass the screw through the reserved screw hole of the pressure plate II6 and tighten it evenly into the threaded hole of the cylinder sealing groove 4. During the tightening process, pay attention to the balance of force so that the sealing ring fits tightly with the inner wall of the cylinder sealing groove and the side of the pressure plate. After confirming that the sealing ring and the pressure plate are assembled in place, align the cylinder cover 3 with the sealing end face of the cylinder 2 and slowly lower the cylinder cover until it contacts the surface of the sealing ring.

[0036] Fifth step: According to the preset connection method of the cylinder cover 3 (such as bolt tightening), evenly tighten the connecting parts between the cylinder cover 3 and the cylinder body 2, so that the cylinder cover 3 generates axial compression force on the sealing ring, causing the sealing ring to undergo elastic deformation, further filling the sealing gap, and completing the overall sealing assembly.

[0037] Step 6: When it is necessary to inspect or replace the sealing ring, first loosen the connecting parts between the cylinder cover 3 and the cylinder body 2, and remove the cylinder cover 3; use a wrench to unscrew the fixing screws of the pressure plate II 6, and remove the pressure plate II 6 from the sealing groove 4 of the cylinder body. At this time, the sealing ring can be easily removed from the boss I 51 of the pressure plate I 5 after it is no longer constrained by the pressure plate II 6; when replacing the new sealing ring, repeat the above installation steps, and ensure that all parts are precisely matched before closing the cylinder cover again to restore the sealing structure to its working state.

[0038] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments. Those skilled in the art can make various modifications or variations to the present invention without departing from the technical concept of the present invention, and such modifications or variations naturally fall within the protection scope of the present invention.

Claims

1. A sealing ring, characterized in that: The sealing ring body (1) has a wedge-shaped cross section. The sealing ring body (1) consists of an upper body part (11), a middle body part (12), and a lower body part (13) integrally formed. The top surface of the upper body part (11) is an arc surface (14). The middle body (12) is symmetrically provided with sealing grooves (15); The bottom surface of the lower body part (13) is a plane (16), and the side surface I (17) and side surface II (18) of the lower body part (13) are at the same angle as the end of the adjacent arc surface (14).

2. The sealing ring according to claim 1, characterized in that: A polytetrafluoroethylene film layer (19) is provided on the arc-shaped surface (14).

3. The sealing ring according to claim 2, characterized in that: The opening of the sealing groove (15) is inclined from point A (151) to point B (152), and the inclination angle between point A (151) and point B (152) is consistent with the inclination angle of side I (17) and side II (18).

4. A trench structure, characterized in that: Includes a cylindrical body (2) and a cylindrical cover (3) installed on the top of the cylindrical body (2). A cylindrical body sealing groove (4) is provided on the top of the cylindrical body (2), and a sealing ring as described in any one of claims 1-3 is installed in the cylindrical body sealing groove (4). The cylinder sealing groove (4) is provided with a fixing mechanism that cooperates with the sealing groove (15) of the sealing ring.

5. The trench structure according to claim 4, characterized in that: The fixing mechanism includes a pressure plate I (5) fixed to one side of the sealing groove (4) of the cylinder; The fixing mechanism includes a pressure plate II (6) that can be detached from the other side of the sealing groove (4) of the cylinder.

6. The trench structure according to claim 5, characterized in that: The pressure plate I (5) includes a boss I (51), which engages and is fixed with a sealing groove (15) on the same side; The pressure plate II (6) includes a boss II (61), which engages and is fixed with the sealing groove (15) on the same side.

7. The trench structure according to claim 6, characterized in that: Below the boss I (51) and boss II (61), there is a cavity (7) for accommodating the lower body part (13).

8. The trench structure according to claim 5, characterized in that: The pressure plate II (6) is fixed in the sealing groove (4) of the cylinder by screws.

9. The trench structure according to claim 6, characterized in that: The pressure plate I (5), pressure plate II (6) and sealing ring are fixed together in the sealing groove (15).

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